Fastener socket



Aug. 23.,l 1932.-

M. F. CARR,"

EASTENER SOCKET Filed Dec. 30, 1929 Patented Aug. 23, 1932 lUNITED STATE Moses F. CARR, or LEXINGTON, MAssnc'a-QUsn'rrs,

Assiettes, 'roy UNITED-cam.

FASTENER CORPORATION, OF CAMBRIDGE,-MASSACHUSETT A CORPORATION OF MASSACHUSETTS Application mea neeember 30.11329..seainaeisio. I

My invention aims to provide improvements in sockets, socket installations for such fasteners and the method of assembling the spring member in the socket.

In the drawing, which illustrates a preferred embodiment of my invention v Figure l is a section through a complete snap fastener installation embodying my invention;

Fig. 2 is a plan view of the socket installation as viewed from the side at which the stud enters; and

Figs. 3, 4 and 5 illustrate the manner in which the spring is assembled with the casing of the socket.

Referring to the particular embodiment of my invention illustrated by the drawing, I have shown a socket of the same general type as that illustrated and described in United States Letters Patent No. 1,070,113.

My invention is an improvement as to assembly of the parts, attachment to the carrying medium and formation of the casing without in any way aecting the advantages cf the type of fastener disclosed in the above mentioned patent.

The socket which I have selected for illustration of my invention comprises a casing part pressed from a single piece of sheet metal and a spring member l. 'I he spring member may be of any desired form, but I prefer a split ring-like type made of wire.

The casing part has an internal groove 2 in which the spring is located and in which it is free to expand and contract. This groove 2 is formed by means of a curved wall 3 and a flange 4. The flange 4 is of substantial width and surrounds a stud-receiving aperture 5 in the casing and has attaching means in the form of a series of closely arranged fingers 6 extending from its inner edge. Extending from the curved wall 3 in the opposite direction from the fingers 6 is a cupshaped portion 7 preferably having a closed bottom, as shown in Fig. 5.

So far I have merely attempted to enumerate the elements of my socket device and I now proceed to describe the features which constitute my invention. Referring to Figs. 3, 4 and 5, which illustrate the method of as- 'sembling the spring lwith the casing, .it will benoted thatgthe flange 4 of the'casing 'is first formed to liein a plane atan angle' to a plane which is normaly tothe axis of the'casing, as shown in Fig. 3. Therefore, the stud-receiving aperture 5 issomewhat larger in diameter than when the socket assembly is complete, as shownA in Fig.'A 5. Vhile not essential, the

normal *diameterfof the spring l is slightly i larger than the enlarged diameter of the studreceiving aperture (Fig. 3) and, therefore, the lspring must be contracted to force it past the edge of the flange 4 as the spring is forced tothe position shown in Fig. 4. Thereafter the Vflange 4 is flattened to a plane normal to the axis of the casing and the stud-receiving aperture 5 assumes its normal diameter, whereby the spring is/held in place andcannotbevaccidentally removed. 1

lBy 'the above'described method of assembling the spring with the' casing, I can' producez aso'cket which is closedat one, side and which has l the attaching means extending from the open side of the casing, the casing and` attaching 'means vbeing formed from a l single piece o-f sheet metal'.A In assembling the socket to a carrying meduim V8 (Figs. l and 2) ,I firstprovide a hole in the carrying medium and'then the attaching fingers 6 are and their 4ends bent outwardly against'y the 'carrying medium. Thus, the casing is'located at that side of the `carrying medium V8 opposite the side from which the stud enters and thecarrying medium is gripped firmly between the outwardly bent fingers 6 and the ange4.- 'H l With the installation shown in the patent referredto above the Vcarrying medium for the-stud is'spacedfrom the carrying medium for the socket, whereas with my installation the improved socket permits the carrying medium 8, for the' socket, to lie close tothe carrying medium V9, for the stud 8.(Fi'g.V l), when the snap fastener members 'are 'engaged. f

My improved socket installation is simple, durable and requires fewer parts than any other socket of to me.

passed through theA holev its type heretofore known While I have illustrated and described a preferred embodiment of my invention, I do not wish to be limited thereby, because the scope of my invention is best defined by the following claims.

l. A snap fastener socket comprising, in combination, a casing having means providing an annular internal groove adjacent to a stud-receiving aperture, a spring member assembled in said groove and intersecting the said stud-receiving aperture, and bendable attaching means normally extending from the means providing the annular internal groove parallelwith the axis of the socket, said attaching'means being located adjacent to the Astud-receiving aperture land extending from that side of the casing adj acent to where a stud is adapted to enter the stud-receiving aperture and being adapted to be bent outwardly to engage al carrying medium and pressit against a. portion of the means providing the groove for the spring member thereby together forming the only means for securing the casing to the carrying medium.

2.y A snap fastener socket comprising, in combination, a casing formed from a single piece of metal and having al stud-receiving aperture, cooperating continuous walls forming a spring-receiving groove adjacent to the stud-receiving aperture, a series'of independently bendable attaching `fingers extending from one of said walls and parallel to the axis of the socket prior to attachment of the socket to a support and adjacent to that side of the socket where the stud-receivingjapertu-re is located and a spring member assembled within the groove of said casing.

.3. A snap fastener socket comprising, in combination, a one-piece casing having continuous uninterrupted means providing an annular groove adjacent to a stud-receiving aperture inthe casing, flange material extending integrally from the means providing the annular 'groove and doubled upon itself Vto provide a support-engaging surface, attaching means extending from the casing adjacent to the stud-receiving aperture at that side adjacent to where the stud enters and generally parallel with the axis of the socket prior to attachment to a supporting structure, said attaching means being adapted to be bent outwardly to clamp 'the supporting structure between the attaching means and the support-engaging surface provided by thev laterally 'extending flange means and a spring member assembled within the groove of said vcasing for enga-gement with aycooperating stud. j l

In testimony whereof, I have signed my name to this specification.

' MOSES F. CARR. 

